Erbijsommen tot 20
Erbijsommen
|
1.
10 + 1 =
13
11
|
2.
17 + 3 =
20
6
|
3.
5 + 5 =
10
11
|
4.
19 + 1 =
14
20
|
|
5.
15 + 5 =
20
1
|
6.
18 + 0 =
11
18
|
7.
8 + 7 =
2
15
|
8.
18 + 2 =
10
20
|
|
9.
15 + 1 =
16
6
|
10.
10 + 5 =
3
15
|
11.
3 + 1 =
3
4
|
12.
8 + 4 =
10
12
|
|
13.
4 + 11 =
4
15
|
14.
10 + 10 =
20
7
|
15.
18 + 2 =
9
20
|
16.
10 + 6 =
16
10
|
|
17.
10 + 10 =
6
20
|
18.
8 + 0 =
2
8
|
19.
3 + 2 =
6
5
|
20.
15 + 0 =
9
15
|